Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022, 2024 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify it under the
6 : terms of the GNU General Public License as published by the Free Software
7 : Foundation; either version 3, or (at your option) any later version.
8 :
9 : TALER is distributed in the hope that it will be useful, but WITHOUT ANY
10 : WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11 : A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12 :
13 : You should have received a copy of the GNU General Public License along with
14 : TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
15 : */
16 : /**
17 : * @file exchangedb/pg_insert_reserve_closed.c
18 : * @brief Implementation of the insert_reserve_closed function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "platform.h"
22 : #include "taler_error_codes.h"
23 : #include "taler_dbevents.h"
24 : #include "taler_pq_lib.h"
25 : #include "pg_insert_reserve_closed.h"
26 : #include "pg_helper.h"
27 : #include "pg_reserves_get.h"
28 : #include "pg_reserves_update.h"
29 :
30 : enum GNUNET_DB_QueryStatus
31 11 : TEH_PG_insert_reserve_closed (
32 : void *cls,
33 : const struct TALER_ReservePublicKeyP *reserve_pub,
34 : struct GNUNET_TIME_Timestamp execution_date,
35 : const struct TALER_FullPayto receiver_account,
36 : const struct TALER_WireTransferIdentifierRawP *wtid,
37 : const struct TALER_Amount *amount_with_fee,
38 : const struct TALER_Amount *closing_fee,
39 : uint64_t close_request_row)
40 : {
41 11 : struct PostgresClosure *pg = cls;
42 : struct TALER_EXCHANGEDB_Reserve reserve;
43 : enum GNUNET_DB_QueryStatus qs;
44 : struct TALER_FullPaytoHashP h_payto;
45 :
46 11 : TALER_full_payto_hash (receiver_account,
47 : &h_payto);
48 : {
49 11 : struct GNUNET_PQ_QueryParam params[] = {
50 11 : GNUNET_PQ_query_param_auto_from_type (reserve_pub),
51 11 : GNUNET_PQ_query_param_timestamp (&execution_date),
52 11 : GNUNET_PQ_query_param_auto_from_type (wtid),
53 11 : GNUNET_PQ_query_param_auto_from_type (&h_payto),
54 11 : TALER_PQ_query_param_amount (pg->conn,
55 : amount_with_fee),
56 11 : TALER_PQ_query_param_amount (pg->conn,
57 : closing_fee),
58 11 : GNUNET_PQ_query_param_uint64 (&close_request_row),
59 : GNUNET_PQ_query_param_end
60 : };
61 :
62 11 : PREPARE (pg,
63 : "reserves_close_insert",
64 : "INSERT INTO reserves_close "
65 : "(reserve_pub"
66 : ",execution_date"
67 : ",wtid"
68 : ",wire_target_h_payto"
69 : ",amount"
70 : ",closing_fee"
71 : ",close_request_row"
72 : ") VALUES ($1, $2, $3, $4, $5, $6, $7);");
73 :
74 11 : qs = GNUNET_PQ_eval_prepared_non_select (pg->conn,
75 : "reserves_close_insert",
76 : params);
77 : }
78 11 : if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs)
79 0 : return qs;
80 :
81 : /* update reserve balance */
82 11 : reserve.pub = *reserve_pub;
83 11 : if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT !=
84 11 : (qs = TEH_PG_reserves_get (cls,
85 : &reserve)))
86 : {
87 : /* Existence should have been checked before we got here... */
88 0 : GNUNET_break (GNUNET_DB_STATUS_SOFT_ERROR == qs);
89 0 : if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs)
90 0 : qs = GNUNET_DB_STATUS_HARD_ERROR;
91 0 : return qs;
92 : }
93 : {
94 : enum TALER_AmountArithmeticResult ret;
95 :
96 11 : ret = TALER_amount_subtract (&reserve.balance,
97 : &reserve.balance,
98 : amount_with_fee);
99 11 : if (ret < 0)
100 : {
101 : /* The reserve history was checked to make sure there is enough of a balance
102 : left before we tried this; however, concurrent operations may have changed
103 : the situation by now. We should re-try the transaction. */
104 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
105 : "Closing of reserve `%s' refused due to balance mismatch. Retrying.\n",
106 : TALER_B2S (reserve_pub));
107 0 : return GNUNET_DB_STATUS_HARD_ERROR;
108 : }
109 11 : GNUNET_break (TALER_AAR_RESULT_ZERO == ret);
110 : }
111 11 : return TEH_PG_reserves_update (cls,
112 : &reserve);
113 : }
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